Journal
MATERIALS CHARACTERIZATION
Volume 175, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2021.111078
Keywords
Layered electrode; Aluminum doping; Solid state reaction; Sodium ion battery
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Funding
- DSTSERB, New Delhi under the Physical sciences [EMR/2016/006302]
- University Grants Commission
- PURSE programme - Department of Science and Technology (DST) New Delhi, Govt. of India
- FIST programme - Department of Science and Technology (DST) New Delhi, Govt. of India
- Ministry of Human Resource Development RUSA Phase 2.0 grant [F-24-51/2014]
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This study modulated the crystal structure of P2-Na0.66Ni0.33Mn0.67O2 via Aluminum (Al) doping, enhancing the sodium ion diffusion pathway. A high stable P2-type Na0.66Ni0.33Mn0.67-xAlxO2 (x = 0, 0.05, 0.11) was prepared, showing initial capacity delivery of 184 mAh g−1 when cycled between 1.5 and 4.5 V at 0.1C.
Prismatic type layered oxides are suffering from structural transformation and john-teller effect issues during high voltage operation. In this work, we modulate the crystal structure of P2-Na0.66Ni0.33Mn0.67O2 via Aluminum (Al) doping. The Al substitution enhances the sodium ion diffusion pathway by enlarging the spacing between metal oxide layers. The high stable P2-type Na0.66Ni0.33Mn0.67-xAlxO2 (x = 0, 0.05, 0.11) was prepared via simple solid state reaction. The prepared cell was cycled between 1.5 and 4.5 V at 0.1C and attained an initial capacity delivery 184 mAh g? 1.
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